Ch. 9 - Genetics Quiz
Authored by Esther Han
Science
9th Grade
NGSS covered
Used 1+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The physical traits of an organism are called its ______.
phenotype
allele
genotype
gene
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Alleles are described as ______.
alternate versions of a gene
homologous chromosomes
alternate phenotypes
environmental factors that affect gene expression
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In humans, the presence or absence of dimples is a trait controlled by a single gene. What is the genotype of an individual who is heterozygous for dimples?
dd
Dd
DD
DI
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An individual who is homozygous ______.
carries two copies of the same allele for a gene
expresses the recessive trait
expresses the dominant trait
carries two different alleles for a gene
Tags
NGSS.HS-LS3-1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A purebred plant that produces yellow seeds is crossed with a purebred plant that produces green seeds. The seeds of all of the offspring are yellow. Why?
All of the offspring are homozygous yellow.
The alleles are codominant.
The yellow allele is dominant to the green allele.
The yellow allele is recessive to the green allele
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Incomplete dominance is a condition in plants and people where ______.
multiple alleles are responsible for an inheritance pattern
a single gene impacts more than one characteristic
offspring have an appearance in between the phenotypes of the two parents
most heritable diseases arise
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
You cross a true-breeding red-flowered snapdragon with a true-breeding white-flowered snapdragon. All of the F1 are pink. What can you say about the alleles for the parental traits?
Both red and white are recessive.
Red and white show incomplete dominance.
Pink is dominant, whereas red and white are recessive.
Red is dominant.
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