...white-flowering plant and only pink flowering plants are produced is _____?

inbreeding

incomplete dominance

polygenic inheritance

codominance

2. Eye color in humans is the result of _____ inheritance

multiple allelic

polygenic

sex-linked

simple dominant

3. Which of the following situations is most usual for a dominant allele that results in severe effects in the offspring?

Both parents have the trait.

Only a single offspring has the trait.

The trait occurs by mutation.

none of these

4. Which of the following genetic disorders can be detected by karyotyping?

Down syndrome

Tay-Sachs disease and phenylketonuria

hemophilia and cystic fibrosis

Klinefelter syndrome and sickle-cell anemia

5. A man heterozygous for blood type A marries a woman heterozygous for blood type B. The chance that their first child will have type O blood is _____.
(1 point)

0%

25%

50%

75%

1. incomplete dominance.
2. simple dominant.
3. both parents have the trait.
4. down syndrome.
5. 25%