Unit 5 AP Biology : Heredity

If an organism's diploid cells contain 20 chromosomes, its gametes would contain how many?

• 10

• 20

• 30

• 40

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NGSS.HS-LS3-2

Which of the following is an example of a gamete?

• neuron

• chromosome

• somatic cell

• egg

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NGSS.HS-LS3-2

What separates when cells divide in Meiosis 2

• Sister Chromatids

• Homologous Chromosomes

• Analogous Chromosomes

A recessive trait will be observed in individuals that are ________ for that trait.

• heterozygous
• homozygous or heterozygous
• homozygous
• diploid

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NGSS.HS-LS3-1

Imagine you are performing a cross involving seed color in garden pea plants. What F₁ offspring would you expect if you cross true-breeding parents with green seeds and yellow seeds? Yellow seed color is dominant over green.

• 100 percent yellow-green seeds
• 100 percent yellow seeds
• 50 percent yellow, 50 percent green seeds
• 25 percent green, 75 percent yellow seeds

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NGSS.HS-LS3-2

When an area of a chromatid is exchanged with the matching area on a chromatid of its homologous chromosome, _________________ occurs

• crossing over
• mutagenesis
• hybridization
• fertilization

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NGSS.HS-LS3-2

The observable outward manifestation of the genes of an individual is referred to as its

• blueprint
• genotype
• phenotype
• genetic map

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NGSS.HS-LS4-4

NGSS.HS-LS4-5

Unlike Mendel's experiments, when a very tall person and a very short person mate, the children are variable in height. Why is one trait (tall or short) not dominant over the other?

• the gene for height in humans has incomplete dominance
• the gene for height has multiple co-dominant alleles
• height in not controlled by genes in humans
• human height is controlled by multiple genes

One of the main reasons genes assort independent of one another  is that 

• they produce unrelated traits
• they produce related traits
• they are on the same chromosome
• they are on different chromosomes.

Tags

NGSS.HS-LS3-1

Chromosomes that do NOT play a role in determining the sex of an individual are called

• sex chromosoems

• X and Y

• autosomes