Non-Mendelian Inheritance — Unit test

Question 1

Parents with the genotypes AO and AB have a child. What are all the possible blood types of the child?

Revolt · Accepted Answer

A, AB, B

Question 2

A plant that has round and yellow seeds (RrYy) is crossed with a plant that has round and yellow seeds (RrYy). What is the ratio of the offspring that will have round and yellow seeds?Key: R = round r = wrinkled Y = yellow y = green

Revolt · Accepted Answer

9:16

Question 3

Red-green color blindness is an X-linked recessive disorder. What is the probability of the offspring having red-green color blindness for the cross that is represented by the Punnett square?

Revolt · Accepted Answer

25 percent

Question 4

Error

Revolt · Accepted Answer

A Punnett square is shown. The columns are labeled Upper D and d. The rows are labeled d and d. Clockwise from upper left the boxes contain: Upper D d, d d, d d, Upper D d.

Question 5

A cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. Purple offspring result due to incomplete dominance. Then, two of the purple offspring are crossed. What proportion of the offspring from the second cross will be purple?

Revolt · Accepted Answer

2 in 4

Question 6

Which represents the cross between parent plants if one is heterozygous and has yellow-colored pods and the other is homozygous and has green-colored pods?

Revolt · Accepted Answer

Yy ´ yy

Question 7

Which blood type could be given as a transfusion for patient with AB blood when the RH factor is unknown?

Revolt · Accepted Answer

AB–

Question 8

In roses, red flowers and long stems are dominant traits. A rose plant that is homozygous for both red flowers and long stems is crossed with a rose plant that is heterozygous for red flowers and homozygous for short stems. What percentage of the offspring will exhibit red, long-stemmed flowers?

Revolt · Accepted Answer

100 percent

Question 9

Cystic fibrosis is a genetic disorder. It is a recessive trait that is determined by two alleles. Suppose two parents each carry at least one recessive allele, but neither of them has cystic fibrosis. Which statement reflects the likelihood of a child of these parents having cystic fibrosis?

Revolt · Accepted Answer

The child may or may not have the disease because a recessive gene from each parent may be passed on.

Question 10

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. Which Punnett square represents the correct way to set up the cross RRYy ´ RrYY?

Revolt · Accepted Answer

A 4-column Punnett square has 4 rows. The columns are labeled Upper R Upper Y, Upper R Upper Y, r Upper Y, r Upper Y. The rows are labeled Upper R Upper Y, Upper R y, Upper R Upper Y, Upper R y.

Non-Mendelian Inheritance — Unit test Answers

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