genetics quiz2

Two pea plants with yellow peas were crossed, and the seeds were planted. Of the 100 offspring, 73 had yellow peas, and the other 27 had green peas. Which allele is dominant?

• Green peas

• Yellow peas

Identify each of the results of these purebred crosses as an example of simple dominance, incomplete dominance, or codominance.

a. A purebred pea plant with wrinkled seeds is pollinated with a purebred pea plant with round seeds. All of the offspring have round seeds.

b. A mom with type A blood and a dad with type B blood have a child with type AB blood

. c. A purebred white poppy is pollinated by a purebred red poppy. All of the offspring have pink blossoms.

d. A purebred white sheep is bred with a purebred black sheep to produce a white lamb.

a is _______, b is _________, c is ________ , d is ________

• A is simple dominance, b is Codominance, c is incomplete dominance, d is simple dominance

• A is incomplete dominance, b is codominance, c is simple dominance, d is simple dominance

True or false

Natural selection is limited by the genetic info in the original created kind since it can’t create any new info. Natural selection can act only to remove genetic info from a population

• True

• False

True or False;

natural selection can produce cats from the dog kind?

• True

• False

True or false:

Creationists believe that natural selection is responsible for all the creatures descending from an original common ancestor

• True

• False

In a population of gray squirrels, some individuals are larger than others. How is genetic drift likely to affect this population without any pressure from the environment?

• It will stay the same

• Genetic drift is random, so it is impossible to predict

True or false

More than one gene is responsible for one phenotype is polygenic inheritance

• True

• False

True or false

An organism’s genotype is the combination of alleles that it has inherited from its parents

• True

• False

True or false

An organism’s phenotype consists of the traits coded for by the alleles in its genotype

• True

• False

True or false:

Genetic drift is measured by the ratio of organisms with a specific phenotype

• True

• False

Answer explanation

It’s the ratio of alleles in the organisms of a population