Unit 5 Biology

Why is genetic recombination a good thing?

• Gives us new genes

• is lethal in humans

• increases genetic variation

• separates during crossing over

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NGSS.HS-LS3-2

If an organism's diploid number (2n) is 46, what is its haploid (n) number?

• 46

• 92

• 23

• 2

Having two different alleles of the same trait is said to be

• heterozygous

• homozygous

• heptazygous

• polygenic

Having two of the same alleles of the same trait is said to be

• heterozygous

• homozygous

• heptazygous

• polygenic

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NGSS.HS-LS3-1

Dominant Alleles are represented by

• numbers

• capital letters

• lowercase letters

• nothing

Recessive Alleles are represented by

• numbers

• capital letters

• lowercase letters

• nothing

Genetics is the study of

• people

• heredity

• the environment

• none of the other answers are correct

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NGSS.HS-LS1-1

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A specific characteristic is known as a(n)

• allele

• trait

• dominance

• none of the other answers are correct

What is shown in the picture?

• independent assortment

• anaphase I of meiosis

• crossing-over

• incomplete dominance

B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.

• they have same phenotype and genotype

• they have different genotypes and phenotypes

• they have same phenotype but different genotypes

• they have same genotype but different phenotypes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2