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What are errors in DNA called?
explain giving examples different chromosomal sex determination mechanisms
explain giving examples the different chromosomal sex determination mechanisms .
A child has blood type AB and the mother had blood type A. What are all the possible genotypes of the father.


In earthworms, the order of dominance is slimy skin, slippery skin, smooth skin, dry skin.
Create an order of dominance chart
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
Imagine an isolated population in which each adult female has a distinct mitochondrial genome. In each generation, every adult female has two children (with a 50% chance of being male or female). After each generation, we will assume that all the adults die out, and all the children become adults.

After seven generations, what is the expected percentage of mitochondria from the original population of females that will still exist in the population’s children? Express your answer as a decimal between 0 and 1, rounded to three decimal places.

Note: after one generation, there will be 100% of the mitochondria from the original population present in the population’s children since male children receive the mitochondria from their mothers (but do not pass them on to their own children.)
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