5.2 & 5.3 Review

Which pattern of inheritance concerns genes located on the sex chromosomes?

• Complete dominance

• Polygenic

• Sex-linked

• Codominance

• Multiple alleles

The offspring offspring of the P generation are the ____ generation.

• P₁

• F₂

• F₁

• Heterozygous

Tags

NGSS.HS-LS3-1

The offspring of the F1 generation are the ___ generation.

• P₁

• F₁

• F₂

• Homozygous Recessive

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In peas, the trait for tall plants is dominant (T) and the trait for short plants is recessive (t).  The trait for yellow seeds is dominant (Y) and the trait for green seeds is recessive (y).
A cross between two plants results in 292 tall, yellow plants and 103 short, green plants.  Which option indicates the most likely cross that produced these offspring?

• TtYY x Ttyy
• TTYy x TTYy
• TTyy x TTYy
• TtYy x TtYy

Tags

NGSS.HS-LS3-3

NGSS.HS-LS4-3

In garden peas, a single gene controls stem length. The recessive allele (t) produces short stems when homozygous. The dominant allele (T) produces long stems. A short-stemmed plant is crossed with a heterozygous long-stemmed plant. Which of the following represents the expected phenotypes of the offspring and the ratio in which they will occur?

• 3:1

• 1:1

• 1:3

• 4:0

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Imagine you are performing a cross involving garden pea plants. What F1 offspring would you expect if you cross true-breeding parents with green seeds with 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

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If you cross two heterozygous traits (Rr x Rr), as Mendel did in his second experiment, what ratio will you get between offspring with the dominant and recessive phenotypes

• 1:1
• 2:1
• 3:1
• 4:1

Based on Mendel's experiments, he crossed a P generation true-breeding green seed (G) with a P generation true-breeding yellow seed (g). Which of the following is true regarding the F1 generation.

• All F1 are yellow in color.

• All F1 are green in color

• All F1 are homozygous yellow.

• All F1 are homozygous green.

Tags

NGSS.HS-LS3-1

A student was given a tall pea plant as a gift (T_). The student wants to determine if this plant is homozygous dominant or heterozygous, so a testcross for genotype determination is performed. What is the genotype of the plant that will be crossed with the tall pea plant?

• TT

• Tt

• Heterozygous

• tt

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

When many different genes control one phenotype, this type of inheritance is at work.

• polygenic inheritance

• multiple alleles

• codominance

• linked genes