A backyard homesteader that wants to expand the amount of cute duck breeds. They know the f gene codes for feather coloring (black feathers (F) are dominant to white feathers (f)) while the b gene codes for feet color (grey feet (B) are dominant to orange feet (b)). The homesteader crosses a super fertile heterozygous wild-type duck that has black feathers with grey feet (FfBb) with a homozygous recessive duck with white feathers and orange feet (ffbb). This produces 100 offspring.  2. Which are parental phenotypes? (2 answers)

I'm having trouble with my genetics study guide, and am stuck on this question. If someone could explain it with the work it would help me so much. Thank you! In humans, the inheritance of the ABO blood group system exhibits both complete dominance (alleles IA and IB are dominant to allele i) and codominance (alleles IA and IB). In addition, thalassemia shows incomplete dominance; heterozygotes (Tt) exhibit a mild form of the disease (thalassemia minor) and homozygotes (tt) have a more severe form (thalassemia major). A man has blood type A and his mother has blood type O. His wife has blood type AB. Both members of the couple have thalassemia minor. What is the probability that they will have a child with: a. thalassemia minor and blood type A? b. no anemia and blood type AB? c. thalassemia major and blood type B?

You know that hamster unicorns (Phodopus monocerus) will be the next big pet craze and are investigating their genetics. In hamster unicorns, fur color is controlled by two loci (B and P). When you cross true-breeding black hamster unicorns with true-breeding pink hamster unicorns, all F1 offspring are black.  Hamster unicorns that are B_P_ and B_pp are black, bbpp are pink, and bbP_ are baby blue. What type of epistasis is this? *genetics/bio question*

A horse breeder for the Kentucky Derby recently noticed that one of his  female horses gave birth to an offspring, a daughter horse, that had  several desirable traits to be a successful racing horse. The offspring had  a well-chiseled head on a long neck, high withers, a deep chest, a short  back, good depth of hindquarters, a lean body, and long legs. The farmer  would like to identify which male horse is the offspring’s father for  selective breeding purposes. He asks a local university to run a DNA  fingerprint with DNA samples from the mother, offspring, and the four  male horses on the farm.

The image shows a pair of homologous chromosomes from a single parent before gamete production. M1 and M2 are maternal chromosomes, while P1 and P2 are paternal chromosomes. Two traits are shown: D represents seed color (D – green, d – yellow), while F represents flower color (F – purple, f – white). These two traits follow the patterns of basic Mendelian genetics. During crossing-over between the M2 F allele and the P1 f allele, a mutation occurred and the portion of P1 did not reattach to the chromosome. Which of the following explains what would happen to the proportion of white flowers in a population resulting from this mutation? A - There would be an increase in the proportion of white flowers because the f allele is distributed to more gametes. B - There would be a decrease in the proportion of white flowers because the f allele is not distributed to as many gametes. C - There would be an increase in the proportion of white flowers because the f allele would not be masked by the…

Below is a pedigree of a family with a history of X-linked recessive color blindness. We will use XB to represent the wild-type allele and Xxb to represent the mutant allele of the gene that leads to color blindness. The color vision status of the individuals with a question mark (?) is unknown. Part 1 Drag the correct genotype for each individual to the boxes under the pedigree symbols for the first two generations. O I. II. O1/4 O 1/2 O 3/4 xBxBxbxbxby xbxB XBXB or xbxB xBy O 0 Part 2 What is the probability that the female child in Generation III will be color-blind? Ⓒ1/4 1/2 O 3/4 000 O 0 0 Part 3 What is the probability that the male child in Generation III will be color blind? ? Autosomal dominant Autosomal recessive ? C Part 4 Are the first two generations of this pedigree consistent with the following modes of inheritance? ✓ No Yes

Make sure to show if it is big (Y) or little (y) Big (S) or little (s) it is so hard to understand if you write it in paper. Please, help me

Could the trait presented in the pedigree shown be caused by an X-linked recessive allele? Why or why not? 11 ||| IV ■ 5 6 Yes, with individual 2 of generation I being heterozygous. No, the offspring of 7 and 8 contradict an X-linked recessive inheritance. No, the offspring of 3 and 4 of generation II contradict an X-linked recessive inheritance. No, the offspring of 1 and 2 of generation I contradict an X-linked recessive inheritance.

Lincoln Red cattle are entirely red. Hereford cattle have a white face. The white face is due to a dominant allele for which Hereford breed is homozygous. A farmer has a herd of Lincoln Red cows and Larry, a Lincoln Red bull. Larry was allowed to mate with cows but died of exhaustion before he had fertilized the whole herd. The farmer borrowed a neighbour’s Hereford bull called Herbert to finish Larry’s job. When the calves were born, the farmer found he could distinguish between Larry’s and Herbert’s offspring. How? He kept one of Herbert’s male offspring to replace Larry. When this bull was mated to the Lincoln Red cows, what would be the phenotypes of the calves and in what proportions?

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