Mendelian Genetics Review

What is it called when a sperm and egg meet?

• meiosis
• fertilization
• cell division
• mitosis

The physical expression of a trait such as brown eyes

• Dominant

• Recessive

• Phenotype

• Genotype

Independent assortment causes _______ chromosomes to be randomly distributed in the final gametes

• homologous

• sister

• haploid

• allele

The dominant trait in this punnett square is

• yellow pea seeds
• green pea seeds
• there is no dominant seed

Tags

NGSS.HS-LS3-1

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

• crossing over
• a mutation
• independent assortment
• fertilization

Tags

NGSS.HS-LS3-2

How are your chromosomes inherited?

• most of your chromosomes from your mother
• most of your chromosomes from your father
• a random number of chromosomes from each parent
• half your chromosomes from your mother and half from your father.

Tags

NGSS.HS-LS3-1

Chromosomes can line up in a variety of arrangements at the beginning of meiosis. Therefore, different combinations of chromosomes can be in different gametes. This source of genetic variation is called

• Crossing over

• Independent Assortment

• Mendel's First Law

• Random fertilization

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What kind of trait is the white color of the flower?

• heterozygous
• Recessive
• Dominant
• Phenotype

Tags

NGSS.HS-LS3-1

If a person has a genotype of RR, what do you know about their gametes (sex cells)?

• They will all contain the R allele.
• They will all contain RR.
• Some will contain R, some will contain r.
• They will all contain the r allele.

Tags

NGSS.HS-LS3-2

What predicted percentage of the offspring will be heterozygous?

• 100%

• 75%

• 50%

• 25%

Tags

NGSS.HS-LS3-3

NGSS.HS-LS4-3