In Persian cats hair length can be short or long. Long hair is a recessive condition and this trait is an example of complete dominance. Assume that you cross two cats heterozygous for this trait and that 8 offspring are produced. What is the probability any 7 of the 8 could have short hair? Write the answer in the form 2!/1!1! * (3/4)^5. Do not write the actual value. A

Here is a cat family. Back fur is created by BB or Bb. White by bb. Based on what the pedigree shows, is this trait recessive or dominant? How do you know? 6. a) b) (4 --1 per individual ) Label everyone's genotype. In some cases you may have to say there is an X probability of, for example, BB and a Y probability of Bb. Hint: these probabilities might not be in halves or fourths. c) baby? No qualifiers! (Don't say, if this certain individual was genotype X, then there is a A% probability, but if this individual was genotype Y, then there is a B% probability. (SHOW WORK) If siblings Il-1 and Il-2 mate, what is the total, overall probability that they will have a white kitten II 1 2

We have crossed true-breeding flies today. Wild type to mutant. Their phenotypes were wt and vg se. (Let’s not worry about males and females for now, just assume both genes are autosomal, which is normal in a Mendelian experiment). The results of a cross are phenotypes. I will be asking you for numbers or a ratio of phenotype numbers you expect to see in the offspring from this cross. To answer this, you’ll need to start with the genotypes of parents, then write their gametes, then write the offspring genotypes, then get the phenotypes based on them. Predict the results of this cross: In case both mutations are recessive; In case both mutations are dominant; In case vestigial wings are recessive and the sepia eyes are dominant.

Mendel crossed true breeding pea plants. One parent had round, green, seeds, and the other had wrinkled, yellow seed. All F, plants had seeds that were round and yellow. Predict the results of F2 plants, using a Punnet square or tree diagram. a. What are the results as a ratio? A What are the results as fractions?

The picture shown here is  pedigree chart for a family, some of whose members exhibit the dominant trait, a widow's peak.   Individuals with a widow's peak are indicated by a filled square or circle.  Individuals with a straight hairline are indicated by an empty square or circle. What is the probability that individual III-1 has a genotype of  Ww? Explain your answer.

A tall, purple pea plant that is true-breeding is crossed with a short, white pea plant. What will the genotype(s) of their offspring be? Include a Punnett Square to justify your answer. BIU A, Paragraph + v ... Add a File Record Audio Record Video

For individual lll-6, how do you get 2/3 for the probability of heterozygous? What are the three offspring you're talking about?

The shape of a heliodor is an X-linked trait. Male heliodors inherit two X chromosomes, while the females inherit an X and a Y chromosome. The recessive allele codes for the common bell-shape  while the dominant phenotype is a round shape . Hudson is a round male and has offspring with Heidi, a bell-shaped female. They already have one daughter, Hannah, who is shaped like her mother. There is [blank] % that their next child will also be bell-shaped female like Hannah.

Joseph is heterozygous for the traits F (dominant to f) and B (dominant to b)and his genes are in cis, and these locuses are on the same chromosome and separated by 30 map units. Sara is also heterozygous for these traits but here genes are in trans. Calculate how likely it would be to observe an individual who is homozygous dominant for the genes F and B. Be sure to show your work for full credit.

Suppose two parents, a father with the genotype AaBbccDd and a mother with the genotype aaBbCcDd, want to have children. Assume the loci are inherited independently of each other. Enter your answers as the most simplified fractions (e.g. 1/8 instead of 2/16). What proportion of the offspring are expected to have: The same genotype as the father?  The same phenotype as the father?  All dominant phenotypes?  All recessive phenotypes?