7th Grade Genetics | Baamboozle - Baamboozle | The Most Fun Classroom Games!

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7th Grade Life Science Genetics Review

Study Slideshow

What is labeled B?

Chromosome

gene

cell

DNA

15

What is the genotype of a pea that is homozygous recessive for wrinkled peas?Use the chart to answer the question:

DD

dd

Dd

wrinkled

15

Use the table to answer the following question: What is the phenotype of a pea that is heterozygous for plant height?

Short

Medium

Tall

Bb

15

Use the table to answer the following question: What is the phenotype of a pea that has the genotype RR?

Purple

Light Purple

Pink

White

15

The uppercase letter B represents the dominant allele for black wool in a sheep. The recessive allele for white wool is represented by the lowercase b. All the offspring of two sheep are white. What are their genotypes of the offspring?

White

BB

Bb

bb

15

The Punnett square shows the genotypes of two boxwood plants. T represents the allele for the tall trait. The allele for the dwarf trait is represented by t. What are the possible genotypes of the plants’ offspring?

Tt and tt

TT and tt

TT only

tt only

15

In anole lizards, the dominant allele L controls the trait for long tails. The recessive allele l controls the trait for short tails. A female lizard with the genotype LL crosses with a male lizard with the genotype Ll. What phenotype(s) wi

Short Tails

Ll

Long Tails

LL

15

The Punnett square shows a cross between two pea plants, each with round seeds. Use the Punnett square to answer question. The missing genotype in the square should be correctly written as ___.

Rr

RR

rr

rR

15

An orange tiger gives birth to one white tiger and three orange tigers. Which alleles does the mother have for color?

Two dominant alleles

She is pure for white

One dominant and one recessive

Two recessive alleles

15

The Punnett square shows a cross between two pea plants, each with round seeds. Use the Punnett square to answer question. What is the probability of having an offspring that will produce round seeds?

50%

%

100%

75%

15

Which statement is true about the cross shown in the Punnett square?

Both parents are heterozygous

Both parents are homozygous

One parent is heterozygous and the other is homozygous for t

The trait is controlled by co-dominant alleles.

15

The allele for freckles, F, is dominant among humans. If a woman with freckles (FF) and a man without freckles (ff) have children, what are the possible genotypes of the children?

Ff

ff

FF, Ff, ff

Ff, ff

15

Which of the following best describes what a Punnett square shows?

lists traits expressed by the offspring of a genetic cross

identifies where genes are located on chromosomes

used to predict the possible outcomes of a genetic cross

describes the number of offspring from a genetic cross

15

homozygous dominant

DD

aA

bb

Aa

15

heterozygous

mm

Aa

DD

bb

15

homozygous recessive

bb

Aa

aA

DD

15