Genetics Review

Different forms of a gene are called...

• Traits

• Pollinators

• Alleles

• Hybrids

When Mendel crossed a purebred tall pea plant with a purebred short pea plant, all of the (F1) generation inherited...

• 1 allele from each parent

• 2 allele from each parent

• no allele from each parent

• 46 allele from each parent

Tags

NGSS.HS-LS3-1

When an egg is fertilized, what is the probability that the offspring will be male?

• 1

• 1/2

• 1/3

• 1/4

Tags

NGSS.HS-LS3-3

The principles of probability can be used to...

• Predict traits of the offsping of genetic crosses

• Determine the actual outcomes of genetic crosses

• Determine which species should mate

• Decide which organisms are best to genetically cross

Tags

NGSS.HS-LS3-3

NGSS.HS-LS4-3

Organisms that have 2 identical alleles are said to be

• Homozygous

• Purebred

• Hybrid

• Heterozygous

In the punnett square above, If T codes for Tall and t codes for short, what is true of the offspring?

• Half is expected to be tall

• Half are expected to be short

• All will be short

• All will be tall

Tags

NGSS.HS-LS3-1

What law says that during gamete formation genes for different traits separate (ex. just because you have red hair doesn't mean you will have freckles)?

• Law of Dominance

• Law of Recessive

• Law of Independent Assortment

• Law of Segregation

What law says that during gamete formation alleles for a trait (ex. eye color) separate and each gamete gets one copy?

• Law of Dominance

• Law of Recessive

• Law of Independent Assortment

• Law of Segregation

Tags

NGSS.HS-LS3-2

In the dihybrid cross above, how many different phenotypes are possible?

• 4 (Round and Yellow, Round and Green, Wrinkled and Yellow, and Wrinkled and Green)

• 1 (Wrinkled and Yellow)

• 2 (Yellow or Green)

• 16 (9 Wrinkled and Yellow, 3 Round and Yellow, 3 Round and Green, 1 Wrinkled and Green)

A breed of birds shows co-dominance for feather color. One allele codes for black and another allele codes for white. What color will a hybrid bird be?

• Black

• White

• Grey

• Black and White speckled

Tags

NGSS.HS-LS3-1