A heterozygous individual is crossed with a homozygous recessive individual. a. Draw a Punnett square to represent this cross. b. What is the probability that an offspring will have a homozygous genotype? c. What is the probability that an offspring will have a dominant phenotype? d. What is the probability that three offspring will be produced that all carry the recessive allele but do not express the recessive phenotype?

Carrion beetles lay their eggs in dead animals and then bury them in the ground until they hatch. Assume that the preference for fresh meat (F) is dominant to the preference for rotted meat and that the tendency to bury the meat shallow (S) is dominant to the tendency to bury the meat deep. Suppose a female carrion beetle homozygous dominant for both traits mates with a male homozygous recessive for both traits.  1) What will the F1 genotypic ratio be? 2) What are the chances of obtaining a beetle that is heterozygous for both traits?

The chart below is showing 4 generations of a family that is affected by a hereditary disease. a. Is the disorder being tracked dominant or recessive? How do you know? b. There is only one possible genotype for person C. True or False? c. What are the possible genotypes for person A? d. What are the possible genotypes for person B?, e. If two people with the same genotypes as person C's spouse and person A's spouse had a child, what is the probability that the child will be affected by this genetic disorder? (draw a Punnett square using the correct genotypes to help you). % chance offspring will be affected % chance offspring will not be affected

Doing genetic analysis it is determined that two parents are heterozygous for two separate unlinked recessive traits (i.e., both parents are heterozygous for both loci). Given this genetic information, what is the probability of their having a child which is homozygous recessive for both traits?

In the example below, crossing you left thumb over your right thumb is dominant T to crossing your right over left recessive t. Identify the genotype of the individual shown below: OShutterstock / robynleig O A. homozygous dominant (TT) O B. heterozygous dominant (Tt) or homozygous dominant (TT) OC. homozygous recessive (tt) O D. Cannot be determined from information provided

discussion of how coat color and pattern are determined in dogs. a. Why are Irish setters not black in color? b. Can a poodle crossed with any other breed produce spotted puppies? Why or why not? c. If a St. Bernard is crossed with a Doberman, what will be the coat color of the offspring: solid, yellow, saddle, or bicolor? d. If a Rottweiler is crossed with a Labrador retriever, what will be the coat color of the offspring: solid, yellow, saddle, or bicolor?

In genetics, what does a genotype of Hh signify? Choose 1 answer: Choose 1 answer: (Choice A) A   Homozygous; two dominant alleles (Choice B) B   Homozygous; two recessive alleles (Choice C) C   Heterozygous; one dominant allele and one recessive allele (Choice D) D   Homozygous; one dominant allele and one recessive allele

If a male is homozygous dominant for a trait, that parent’s genotype might be DD. If the female is heterozygous for the same trait, her type would be Dd. a. How many genetically different sperm can the male produce? b. Using punnet square, determine the expected genotypic ratios of their offspring. c. What are the expected phenotypic ratios?

In fruit flies, red eyes (E) are dominant to white eyes (e). Cross two heterzygotes.  a. What are the possible genotypes for red eyes ? b. What are the possible genotype(s) for white eyes ?

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