Genetics Answers

2. A chestnut trotter was test crossed. All of the offspring were chestnut trotters.Give the probable genotypes of all individuals

In horses, trotting is dominant to pacing and chestnut is dominant to white.

A What would be the phenotype of a trotter, pure white mare crossed pure pacer, pure chestnut stallion
b. cross two of the F1 and gibe phenotype only of the F2
c. Give the phenotype and genotype of a cross between TtCc x TTCc

Hair colour in guinea pigs, with genotype bb, what is the phenotype?

In guinea pigs, black hair is dominant over white hair.
What is the genotype of a homozygous black guinea pig?

In pirates brown eyes are dominant to blue eyes, show the cross between a heterozygous brown-eye pirate with a blue-eyes pirate. State the phenotypic ratio

How are the traits or characteristic of sharks related to their evolution?

Calculate the frequency of the two alleles showing incomplete dominance. Phenotype and population... hom fast=976 hom slow =58 heterozygous 316.

The largest genome belongs to?

Is it bacteria or fungi or something else

Fred has Klinefelter syndrome (XXY) along with Norrie’s syndrome, an X-linked recessive disorder which causes cataracts. Fred’s mother and his father both do not have Norrie’s syndrome. Fred’s mother’s father does have Norrie’s Syndrome. Assuming Fred’s Kleinfelter Syndrome arose from nondisjunction in meiosis, then identify the parent and specific meiotic division where the disjunction error most likely occurred. Explain your answer using a pedigree and diagram to show the nondisjunction

In peas, Tall (T) is dominant over dwarf (t), Yellow is dominant over green (y), and
Smooth (S) is dominant over wrinkled (s). What fraction of the offspring in the
following cross would be homozygous recessive for all gene pairs in the cross:
YyTtss x YyttSs?