This document discusses monohybrid and dihybrid crosses. A monohybrid cross involves a trait determined by one gene with two alleles, like seed shape in pea plants. A dihybrid cross examines two traits, like fruit color and shape in squash. The document uses examples to explain how to set up Punnett squares to determine the genotype and phenotype ratios for the F1 and F2 generations in a monohybrid or dihybrid cross.
Boyd 2014 [16] Record linkage is the process of bringing together data relating to the same individual from within and between different datasets. When a unique person-based identifier exists, linkage can be achieved by simply merging datasets on the identifier.
Linkage is the close association of genes or other DNA sequences on the same chromosome. The closer two genes are to each other on the chromosome, the greater the probability that they will be inherited together.
The two different types of linkage are:
Complete linkage.
Incomplete linkage.
“Linkage and recombination are the phenomena that describe the inheritance of genes.”
This Power Point Presentation is designed to explain Mendel's experiment on hybridization and dihybrid cross which considers inheritance of two traits at a time and to know whether they are inherited independently or are influenced by each other and also about Law of Independent assortment
Boyd 2014 [16] Record linkage is the process of bringing together data relating to the same individual from within and between different datasets. When a unique person-based identifier exists, linkage can be achieved by simply merging datasets on the identifier.
Linkage is the close association of genes or other DNA sequences on the same chromosome. The closer two genes are to each other on the chromosome, the greater the probability that they will be inherited together.
The two different types of linkage are:
Complete linkage.
Incomplete linkage.
“Linkage and recombination are the phenomena that describe the inheritance of genes.”
This Power Point Presentation is designed to explain Mendel's experiment on hybridization and dihybrid cross which considers inheritance of two traits at a time and to know whether they are inherited independently or are influenced by each other and also about Law of Independent assortment
GENETICS
CYTOGENETICS
Definition of Linkage, Coupling and Repulsion hypothesis, Linkage group- Drosophila, maize and man, Types of linkage-complete linkage and incomplete linkage, Factors affecting linkage- distance between genes, age, temperature, radiation, sex, chemicals and nutrition, Significance of linkage.
The tendency of two or more genes to stay together (i.e., the co-existence of two or more genes) in the same chromosome during inheritance is known as LINKAGE. The linked genes are present on the same chromosome are said to be SYNTENIC. The linked genes do not show independent assortment.
LINKAGE v/s INDEPENDENT ASSORTMENT
The frequency of linkage or the strength recombination is influenced by several factors (agents).
GENETICS
CYTOGENETICS
Definition of Linkage, Coupling and Repulsion hypothesis, Linkage group- Drosophila, maize and man, Types of linkage-complete linkage and incomplete linkage, Factors affecting linkage- distance between genes, age, temperature, radiation, sex, chemicals and nutrition, Significance of linkage.
The tendency of two or more genes to stay together (i.e., the co-existence of two or more genes) in the same chromosome during inheritance is known as LINKAGE. The linked genes are present on the same chromosome are said to be SYNTENIC. The linked genes do not show independent assortment.
LINKAGE v/s INDEPENDENT ASSORTMENT
The frequency of linkage or the strength recombination is influenced by several factors (agents).
ACC 491 Week 4 Learning Team Assignment Apollo Shoes Case Assignment (1) 2015...amoryatlanta
Sample content
Learning Team Assignment:
Internal Control Audit – Apollo Shoes
ACC 491
ICQ for Apollo Shoes
Assertions and Questions
Yes, No, N/A
Comments
Occurrence assertion:
1. Is the credit department independent of the sales department?
yes
The sales clerks are part of the marketing department although the orders need to be presented to the credit manager which is part of the treasury department.
2. Are sales of the following types controlled by the same procedures described below? Sales to employees, COD sales, disposals of property, cash sales, and scrap sales.
No
The sales completed by multiple groups are completed by different company policies and procedures.
3. Is access to sales invoice blanks restricted?
yes
Invoiced sales are completed by the billing department and are further removed on a case to case basis.
4. Are pre-numbered bills of lading or other shipping documents prepared or completed in the shipping department?
yes
The ship
Biology 103 Laboratory Exercise – Genetic Problems
Introduction
Although the science of genetics has become a highly sophisticated discipline dealing
with the interactions of hereditary factors at the molecular level, it has its roots in the
basic laws of heredity initially discovered and presented by Gregor Mendel more than
one hundred years ago. Mendel's success in discovering these laws was due largely to his
application of the simple rules of mathematical probability - the laws of chance - to his
observations concerning the inheritance of certain characteristics in the garden pea plant.
Reginald Punnett and the Punnett Square
The Punnett square is a diagram used by biologists to determine genotypic probability
within the offspring from a particular genetic cross. The Punnett square shows every
possible genotypic combination of maternal alleles with the paternal alleles for a genetic
cross. Punnett squares only give probabilities for genotypes, not phenotypes. The square
diagram was designed by the British geneticist, Reginald Punnett (1865-1967) and first
presented to the science community in 1905. Punnett’s Mendelism (1905) is considered
the first popular science book to introduce genetics to the public.
Solving Genetic Problems
R
R'
R
RR RR'
R'
RR' R'R'
Maternal alleles
A
A
a
Aa
Aa
Paternal
Alleles
a
Aa
Aa
The first step in solving a genetic problem is to establish the genetic symbols you will use
in your problem solution. Stay consistent by using these same symbols throughout the
problem solving process.
Represent dominant and recessive alleles (different forms of a gene) using traditional
genetic symbols. Dominant alleles should be represented with the capital version of an
alphabetic letter while using the lower case version to show recessiveness. For example:
B = black color, b = white color.
Each individual gene or trait is diploid (2n) in nature and therefore, must be represented
with two alleles. Continuing with the alleles mentioned previously, an individual may
have the genetic makeup BB, Bb, or bb when using those alleles.
Remember that gametes (sperm and egg) are haploid (n) and can only provide one allele
per trait. For example: B or b
An individual’s genotype contains the possible gametes that can be expected to be
produced by that individual. Much of genetics revolves around the probability of the
makeup of gametes. If the individual is homozygous, all of the gametes produced will
possess the same kind of allele. For example, an individual with the genotype BB would
be expected to produce only B gametes and individuals with genotype bb would produce
only b gametes.
If the individual is heterozygous, that is the individual’s genotype contains one dominant
allele and one recessive allele (Bb), the gametes produced will possess one or the other of
the two forms of the gene – B or b. ...
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
3. Monohybrid Cross
a method of determining the inheritance pattern
of a trait between two single organisms.
a cross between parents who are true-breeding
for a trait; i.e., both are homozygous for one allele
of the
gene, for example AA x aa, in
which A is the dominant allele
for a trait and a is the recessive
allele for that same trait.
4. Sample Problem
In pea plants, spherical seeds (S) are
dominant to dented seeds (s). In a
genetic cross of two plants that are
heterozygous for the seed shape trait,
what fraction of the offspring should
have spherical seeds?
5. Analysis
The figure above represents a monohybrid
cross of F1-hybrid plants.
Both parent plants are heterozygous (Ss) for
an allele that determines seed shape.
Presence of the dominant allele (S) in
homozygous (SS) or heterozygous (Ss) plants
results in spherical seeds.
Homozygous recessive (ss) plants have
dented seeds.
6. Analysis
To solve the sample problem, you'll
need to set up a Punnett square.
Punnett square - a diagram that is used
to predict an outcome of a particular
cross or breeding experiment
7. Steps to Solve the Sample
Problem
Set up a 2 by 2
Punnett square.
8. Steps to Solve the Sample
Problem
Write the alleles for
parent 1 on the left
side of the Punnett
square.
Each gamete will have
one of the two alleles of
the parent. In this
particular cross, half of
the gametes will have
the dominant (S) allele,
and half will have the
recessive (s) allele. We
will use blue and brown
to keep track of the
alleles of each parent.
S
s
9. Steps to Solve the Sample
Problem
Write the alleles
from parent 2 above
the Punnett square.
For this heterozygous
parent (Ss), half of the
gametes will have the
dominant (S) allele, and
half will have the
recessive (s) allele.
S
S
s
s
10. Steps to Solve the Sample
Problem
Fill the squares for
parent 1.
Fill each square with
the allele from Parent
1 that lines up with
the row.
Fill the squares for
parent 2.
Fill each square with
the allele from Parent
2 that lines up with
the column.
S
S
s
s
S S
s sS
S
s
s
11. Steps to Solve the Sample
Problem
Interpreting the
results of a Punnett
square
Genotypes that
resulted from this
monohybrid cross
(Ss x Ss)
25% homozygous
dominant
50% heterozygous
25%
homozygous
recessive
S
S
s
s
S S
s sS
S
s
s
12. Steps to Solve the Sample
Problem
Interpreting the
results of a Punnett
square
Phenotypes that
resulted from this
monohybrid cross
(Ss x Ss)
75% Spherical
25% Dented
S
S
s
s
S S
s sS
S
s
s
14. Dihybrid Cross
a cross between F1 offspring (first generation
offspring) of two individuals that differ in two traits
of particular interest.
used to test for dominant and recessive genes in
two separate characteristics
The rules of meiosis, as they apply to the
dihybrid, are codified in Mendel's First Law and
Mendel's Second Law, which are also called the
Law of Segregation and the Law of Independent
Assortment, respectively
15. Example Problem
In summer squash, white fruit color (W) is
dominant over yellow fruit color (w) and disk-
shaped fruit (D) is dominant over sphere-
shaped fruit (d).. If a squash plant true-
breeding for white, disk-shaped fruit is
crossed with a plant true-breeding for yellow,
sphere-shaped fruit, what will the phenotypic
and genotypic ratios be for:
a. the F1 generation?
b. the F2 generation?
16. Steps to Solve the Sample
Problem
Write down the cross in terms of the
parental (P1) genotypes and
phenotypes:
WWDD (white, disk-shaped
fruit) X wwdd (yellow, sphere-
shaped fruit)
17. Steps to Solve the Sample
Problem
Determine the P1 gametes, place
them in a Punnett Square and fill in
the resulting genotypes:
18. Steps to Solve the Sample
Problem
Determine the genotypic and
phenotypic ratios for the F1
generation:
All F1 progeny will be
heterozygous for both characters
(WwDd) and will have white, disk-
shaped fruit .
19. Steps to Solve the Sample
Problem
Write down the cross between
F1 progeny:
WwDd (white, disk-shaped
fruit) X WwDd (white,
disk-shaped fruit)
20. Steps to Solve the Sample
Problem
Determine the
F1 gametes,
place them in a
Punnett Square
and fill in the
resulting
genotypes:
21. Steps to Solve the Sample
Problem
Determine the genotypic and phenotypic ratios
for the F2 generation:
Genotypic ratios:
1/16 will be homozygous dominant for both traits
(WWDD)
2/16 will be homozygous dominant for color and
heterozygous for shape (WWDd)
2/16 will be heterozygous for color and homozygous
dominant for shape (WwDD)
1/16 will be homozygous dominant for color and
homozygous recessive for shape (WWdd)
4/16 will be heterozygous for both traits (WwDd)
22. Steps to Solve the Sample
Problem
2/16 will be heteozygous for color and
homozygous recessive for shape (Wwdd)
1/16 will be homozygous recessive for color
and homozygous dominant for shape
(wwDD)
2/16 will be homozygous recessive for color
and heterozygous for shape (wwDd)
1/16 will be homozygous recessive for both
traits (wwdd)
This is a 1:2:2:1:4:2:1:2:1 genotypic ratio
23. Steps to Solve the Sample
Problem
Determine the genotypic and phenotypic
ratios for the F2 generation:
Phenotypic ratios:
9/16 will have white, disk-shaped fruit
3/16 will have white, sphere-shaped
fruit
3/16 will have yellow, disk-shaped fruit
1/16 will have yellow, sphere-shaped
fruit
This is a 9:3:3:1 phenotypic ratio.