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Unit 8 Test Review - Genetics

Authored by Enviro Teacher

Science

9th Grade

NGSS covered

Used 49+ times

Unit 8 Test Review - Genetics
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18 questions

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1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Aa, DD, bB, yy are all examples of

genotypes
phenotypes

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which of the following genotypes is heterozygous?

Bb
BB
bb
B

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which of the following genotypes is homozygous recessive?

A

Aa

AA

aa

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following represents the phenotype of Ttrr if tall is dominant over short and rough is dominant over wrinkled?

heterozygous tall, homozygous wrinkled

heterozygous short, homozygous wrinkled

heterozygous short, homozygous round

homozygous tall, homozygous wrinkled

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

The Punnett square above shows a cross between a homozygous dominant genotype for hair color and a heterozygous genotype for hair color. Which conclusion can be drawn for the square shown?

The parents will have four offspring.

Two of the offspring will be homozygous recessive.

Only two fo the offspring will have the same hair color.

All of the offspring will have the same color hair.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

In cattle, the allele for short horns (S) is dominant over the allele for long horns (s). Two heterozygous short-horn cattle are bred and produced four offspring. What percentage would you expect to have long horns?

100%

75%

50%

25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

In cattle, the allele for short horns (S) is dominant over the allele for long horns (s). Two heterozygous short-horn cattle are bred and produced four offspring. What is the genotypic ratio of possible offspring?

1 ss: 1 Ss: 1 SS

75% short and 25% long horns

1 SS: 2 Ss: 1 ss

3:1 horns

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