In some aliens, one center horn (A) is codominant with two horns (B). If an alien inherits both alleles (AB), then the alien has three horns. A recessive allele (O) results in an alien which has no horns. Can you match the genotype to each of the pictures below? Write the genotype and phenotype of the four aliens in the box provided. 4.

Tay-Sachs disease is a rare human disease in which toxic substances accumulate in nerve cells. The recessive allele responsible for the disease is inherited in a simple Mendelian manner. For unknown reasons, the allele is more common in populations of Ashkenazi Jews of eastern Europe. A woman is planning to marry her first cousin, but the couple discovers that their shared grandfather’s sister died in infancy of Tay-Sachs disease.a. Draw the relevant parts of the pedigree, and show all the genotypes as completely as possible. b. What is the probability that the cousins’ first child will have Tay-Sachs disease, assuming that all people who marry into the family are homozygous normal?

In the world of Weeping angels, those with pointy wings are (A_), while those with round wings are (aa). In the efforts to explore this extraordinary species, you wish to determine the genotype of a pointy winged angel. Luckily, you have trapped a round winged angel that you can cross your pointy winged angel with. If the pointy winged angel is homozygous what phenotypic ratio do you expect from their offspring? (Pointy wing: round wing) Group of answer choices a. 1:0 b. 2:1 c. 1:1 d. 3:1

Based upon the above pedigree, How is this trait inherited.  Please give specific evidence by identifying each generation by roman numeral, each person within that generation numerically, and  stating which individuals support your claim.  Look CAREFULLY!

Can you please not type the answer can you write it on a paper

In the red backed vole (a small mouse-like mammal) there are two traits under investigation.  The first trait is a distinct tuft of long hairs at the tip of the tail with a tufted tail being recessive to non-tufted tail.  The letter T is used to represent the tail tuft gene.  The second trait is a patch of red fur on the head which is known to be recessive to the more common lack of a red patch.  The letter R is used to represent this trait.  A female to be used in the cross was drawn from a pure breeding line that consistently has both the red patch on the head and a tufted tail.  The female is to be crossed with a male from a highly variable wild population.  The male used had no red head patch and a normal (untufted) tail.  The results were as follows:  7 red head patch with tail tuft, 8 no red head patch with tail tuft, 8 red head patch without tail tuft, 8 no red head patch without tail tuft.  What would the results be if the male was crossed with a female that was known to be…

It would be nice if you can give me some explanation please Number 6

In humans, having freckled skin (F) is dominant. Assume that a homozygous recessive man and a heterozygous woman have a child. a. What is the woman's phenotype? b. Show the Punnett square for the cross. С. What is the child's probability of having no freckles? Uunt