Table of Contents
What is the genotype of a male?
Male Genotype When a sperm carrying the Y chromosome fertilizes an egg, the resulting embryo has a genotype of XY and will be a male. With rare exceptions, all other embryos will be XX or female. Although the Y chromosome codes for a male, the X chromosome is vital for normal human development.
Does XY mean female?
Typically, biologically male individuals have one X and one Y chromosome (XY) while those who are biologically female have two X chromosomes. However, there are exceptions to this rule. The sex chromosomes determine the sex of offspring.
What are the 3 genotypes?
There are three available genotypes, PP (homozygous dominant ), Pp (heterozygous), and pp (homozygous recessive).
What is the genotype of the male parent?
So the male parents genotype is “Bb” (B= allele for black eye, b=allele for red eye).
What is the genotype of the child?
Scientists use the term genotype to refer to the combination of mother and father genes in the person’s make up. AA, AO and OO are the 3 genotypes that may result from the mating of the parents in the example above.
What is the genotype of the husband?
The genotypes of a husband and Wife are IAIB and IA i .
What is a chromosome?
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
What chromosome is female?
Females have two X chromosomes, while males have one X and one Y chromosome. Early in embryonic development in females, one of the two X chromosomes is randomly and permanently inactivated in cells other than egg cells. This phenomenon is called X-inactivation or lyonization.
What does genotype AA mean?
So, an individual with the AA genotype is “homozygous” (both alleles the same) for the dominant version of the gene. An “Aa” individual is “heterozygous (two different alleles) and “aa” is homozygous for the recessive allele.
How do you find a genotype?
A Punnett square is one of the simplest ways to determine genotype. The square is actually a mini-chart used to determine the potential genotype for an offspring with respect to particular trait.
What is genotype example?
Genotype examples A gene encodes eye color. If the child inherits two different alleles (heterozygous) then they will have brown eyes. For the child to have blue eyes, they must be homozygous for the blue eye allele.