Genetics Answers

Two plants with the genotypes TT and Tt _________________.
a. would have the same phenotype. c. would have different phenotypes.
b. have all dominant alleles d. have all recessive alleles.

In blood types, the alleles for A (IA) and B (IB) antigens are codominant to the recessive allele (i) for no antigens. Also, the allele for the presence of the Rh factor antigen (Rh + ) is dominant over the allele for the absence of Rh factor antigen (Rh - ). If a A+ parent, heterozygous both traits , is crossed with B + parent, also heterozygous for both traits, what are the resulting F1 phenotypes?

Genetic Problems: It may be difficult to do the Punnett Squares to hand in on the answer sheet. Therefore, for the following problems, work them out on scrap paper and only place the answers asked for on the answer sheet.
13. Cystic fibrosis is inherited as an autosomal recessive trait. If a woman carries the trait marries a normal male who does not carry the trait, what are the chances that any of their children will have the disease?
0%
14. In peas, tall is dominant over short and smooth seed dominant over rough. Cross a tall rough plant with a short smooth plant.
A. On the answer sheet, write down the genotypes of the parents.

B. From this cross, could any short rough offspring be produced?

In which calluses did the new gene insert inside an existing corn gene

Two parents think their baby was switched at the hospital the mother has a blood type O the father had blood type AB and the baby has blood type B

A homozygous tall corn plant is crossed with a heterozygous tall corn plant.
a) which trait is dominant and how do you know?

why are mutations in genes usually recessive?
with respect to what is stated above and from what you know about eukaryotic cells, their chromosomes, and genes. (How many chromosomes do we have, for example, and how many pairs? Think pairs.)

Hi everyone, Could someone help me to determine the genotype if dad is colorblind, what is his daughter's genotype? is it XbX?

When Mendel crossed a true-breeding purple-flowered pea plant with a true-breeding white-flowered pea plant, the probability of the genotype (Pp) to appear in the offspring is, what is the ratio

16.1A - In a species of river otters, having brown fur is dominant to black fur.

A brown male otter is cross-bred in captivity with a female who has black fur.

The pairing produces 6 otter pups; 4 of whom have brown fur, and 2 with black fur.

From these offspring, one can conclude:
Group of answer choices

The brown-furred father's genotype is homozygous recessive

The black-furred mother's genotype is heterozygous

The black-furred mother's genotype is homozygous dominant

The brown-furred father's genotype is heterozygous

The brown-furred father's genotype is homozygous dominant

The question cannot be answered without more information