Genetics--Ch. 5 L. 1 Mendel and His Peas

Genetics--Ch. 5 L. 1 Mendel and His Peas

By D Olg

Multiple Choice

The study of ______ is called genetics.

• heredity

• dominance

• pea plants

• mutations

Multiple Choice

Parents pass their traits down to the offspring through their _____________.

• daughter cells

• son cells

• body cells

• reproductive cells

Multiple Choice

What did Mendel do to make sure his plants didn't self-pollinate?

• Removed the anther/pollen.
• Added anthers to the plant
• Removed the stigma
• Cut the stems

Multiple Choice

Why did Mendel use cross pollination in his experiments?

• to speed up self pollination

• to control which plants pollinated other plants

• to make sure dominant factors were always produced

• to make sure recessive factors were always produced

• There weren't any bees

Multiple Choice

Fertilization that occurs when pollen from one plant reaches the pistil of a flower on a different plant

• true breeding

• hybrid

• cross pollination

• self pollination

• heredity

Multiple Choice

Fertilization that occurs when pollen from one plant lands on the pistil of a flower on the same plant

• true breeding

• hybrid

• cross pollination

• self pollination

• heredity

Multiple Choice

Plants that produce the same traits as parents when they are self pollinated

• true breeding

• hybrids

• dominant

• recessive

• self pollination

Multiple Choice

What did Mendel conclude about inherited traits?

• One factor(gene) controls each inherited trait

• Two factors(genes) control each inherited trait

• Multiple factors(genes) control each inherited trait

• No factors(genes) control each inherited trait

• Mendel made no conclusions

Multiple Choice

When Mendel crossed a true breeding purple flower plant with a true breeding white flower plants, what percent of the offspring were purple?

• 0

• 25

• 50

• 75

• 100

Multiple Choice

The form of a trait that appears in the first generation offspring

• Dominant
• Recessive

Multiple Choice

A plant produces beautiful red flower, but sometimes it has white flowers. If she crosses both plants as shown here (in the image), 50% of the offspring will have red flowers.

• True

• False

Multiple Choice

After the first generation was crossed, Mendel discovered that the second generation resulted in a _:_ ratio.

• 1:0
• 1:1
• 3:1
• 4:0

Multiple Choice

Mendel tested _______ plants.

• 2

• 5

• 100

• hundreds

Multiple Choice

Recessive traits are always shown in an organism's offspring.

• True

• False

Multiple Choice

A true-breeding purple plant and a true-breeding white plant cross-pollinate. The offspring will be _________.

*Purple is the dominant trait

• all purple

• half purple, half white

• 75% purple, 25% white

• 75% white, 25% purple

Multiple Choice

What did Mendel find the ratio to be of dominant to recessive traits in a cross between two hybrid parents?

• 1:1

• 2:1

• 3:1

• 4:1

• 5:1

Multiple Choice

A man and a woman want to have a child, but the man is heterozygous (Cc) for a recessive trait that causes a fatal illness. What is the probability of a child's inheriting the trait?

• 50%

• 25%

• 0%

• 75%

Multiple Choice

Kari has two pet rats with black fur. When her rats mated, on of their four offspring had white fur, and the other three had black fur. Which is most likely true for Kari's rats?

• Both parents a homozygous for the white-fur trait, which is recessive.

• Both parents are heterozygous for the white-fur trait, which is dominant.

• Both parents are heterozygous for the white-fur trait, which is recessive.

• Both parents are homozygous for the white-fur trait, which is dominant.

Multiple Choice

Mendel recorded all of the following traits except for _____.

• flower color

• seed color

• seed shape

• length of leaf

Multiple Choice

What is a factor that is covered up by another trait?

• Recessive
• Dominant

Multiple Choice

What is a factor that covers up another trait?

• Recessive
• Dominate

Multiple Choice

What is a hybrid?

• Crossing two organisms with different traits
• A cool car
• A parent

Multiple Choice

Two blue flowers are crossed. One is homozygous and one is heterozygous for flower color. If blue is the dominant allele and white is recessive, what will be the ratio of colors in the offspring of plants?

• 1 white: 3 blue

• 4 white: 0 blue

• 2 white: 2 blue

• 0 white: 4 blue

Multiple Choice

Bird A has the genotype ll for bill length, Bird B is LL. The bills of their offspring would be:

• long in 100% of the offspring

• short is 100% of the offspring

• long in 50% of the offspring

• short in 75% of the offspring