genetics

A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?

• 100% BB
• 75% BB and 25%Bb
• 50 % BB and 50% Bb
• 50% Bb and 50% bb

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The man who studied genetics and came up with genetics is

• Watson
• Crick
• Mendel
• Darwin

What law states that in Tt the person will only show the dominant allele

• law of segregation
• law of independent assortment
• law of dominance
• law of punnett squares

Genotype refers to the ...

• physical expression of the genes
• the possible combination of alleles in a gene
• whether an allele is dominant or recessive
• how an organism will appear

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An offspring will receive how many alleles from each parent to determine a specific trait?

• one
• two
• three
• five

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An organism's phenotype describes its __________.

• genetic makeup
• physical appearance

What do you call a section of DNA that codes for a specific trait?

• nucleus
• chromosome
• gene
• DNA

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NGSS.HS-LS3-1

How many chromosomes are found in human egg and sperm cells?

• 20
• 23
• 26
• 46

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

• Reginald Punnett
• Gregor Mendel

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NGSS.HS-LS3-2

An organism's genotype describes its __________.

• genetic makeup
• physical appearance

Tags

NGSS.HS-LS3-1