Bio 7.3 Quiz

What are the predicted phenotypes of the male child rom the union of a woman who is heterozygous for hemophilia and a man who has normal blood clotting characteristics?

1 hemophilia : ! normal

What are the predicted phenotypes of the female children from the union of a woman who is heterozygous for hemophilia and a man who has normal blood clotting characteristics?

1 homozygous normal : 1 carrier

What is the probability that a human sperm will carry an X chromosome?

50 percent

What are the possible phenotypes of the children if the mother's genotype is IAi for blood type and the father is IBi

A, B, AB, O

Why is colorblindness more common in males than females?

All of these

Which of the following best describes the parents in a testcross?

One individual has the dominant phenotype and the other has the recessive phenotype.

- These two questions refer to the birth of a child with blood type A to a mother with blood type B- If the father has blood type AB, which of the following statements is correct about he mother?

She contributes an i allele, which is recessive to the fathers Ia allele.

In peas the trait for tall plants is dominant (T) and the trait for short plants is recessive (t). The trait for yellow seed color is dominant (Y) and the trait for green seed plants is recessive (y) A cross between two plants results in 296 tall yellow plants and 104 tall green plants. Which of the following are most likely to be the genotypes of the parents?

TtYy x TTYy

An example of a genotype is:

TyHH

Carriers of the color blind trait include:

Women who are heterozygous for the trait

What are the possible genotypes of a female child from the union of a woman who is heterozygous for hemophilia and a man who has normal blood clotting characteristics?

XHXH or XHXh

Which of the following combinations of sex chromosomes represents a female?

XX

A form of vitamin D-resistant rickets, known as hypophosphatemia, is inherited as an X-linked dominant trait. IF a male with hypophosphatemia marries a normal female, which of the following predictions concerning their potential progeny would be true?

all of their daughters would inherit the disease.

In humans, assume that the allele for brown eyes is dominant and the allele for blue eyes is recessive. If two brown eyed individuals have a child with blue eyes that means:

both parents are heterozygous for eye color.

A cross of a white hen with a black rooster produces erminette-color offspring. This type of inheritance is known as

co-dominance

Breeding a yellow dog with a brown dog produced puppies with both yellow and brown hairs intermixed. This is an example of:

co-dominance

- These two questions refer to the birth of a child with blood type A to a mother with blood type B- The father must have which of the following blood types?

either AB or A

An organism with the genotype of AaXx can produce gametes containing _____ if the two genes are unlinked.

either AX, Ax, aX, ax

Situations in which one allele for a gene is not completely dominant over another allele for that gene are called

incomplete dominance

In humans, a male has

one X chromosome and one Y chromosome

the physical appearance of an organism for a given trait is termed:

phenotype

Genetic traits of seeds are as follows

skip question

In humans, red-green color blindness is a sex-linked recessive trait. If a man and a woman produce a color-blind son, which of the following must be true?

the mother carries the allele for color blindness

Using standard conventions for naming alleles, which of the following pairs is correct?

tt- homozygous

The genotype for a pea plant that is homozygous recessive for both height and pea color would be:

ttyy