Genetics 1 Cochran

Which genotype is considered purebred?

• TT

• Tt

• tt

An organism's genotype describes its __________.

• genetic makeup
• physical appearance

Tags

NGSS.HS-LS3-1

This field of science is the study of how genetic information is passed from parent to offspring.

• Ecology

• Genetics

• Geology

• Chemistry

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Round seeds (R) are dominant to wrinkled seeds (r). What is the genotype for a wrinkled offspring?

• RR
• Rr
• rr

Tags

NGSS.HS-LS3-1

Scientists use __________ to show what genotype combinations are possible.

• Punnett Square
• Mendel Square
• Madison Square
• Times Square

Purebred is another word for __________, while hybrid is another word for __________.

• dominant; recessive
• recessive; dominant
• homozygous; heterozygous
• heterozygous; homozygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Black fur (B) is dominant. Find the probability of a black offspring in a cross: bb x bb. 

• 0%
• 25%
• 50%
• 100%

Tags

NGSS.HS-LS4-3

A dominant trait shows up __________.

• only when two dominant alleles are present
• only when one dominant allele is present
• when at least one recessive allele is present
• when at least one dominant allele is present

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

__________ worked with pea plants to prove that traits are passed from parent to offspring.

• Reginald Punnett
• Gregor Mendel

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If you cross two parents, both with genotype Bb, what percentage of children will have brown eyes?

• 25%
• 50%
• 75%
• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3