Meiosis and NonMendelian Genetics

Gametes produced by an organism contain a combination of genes from that organism. In every gamete, this combination is --

• the same because it is created from the same DNA.

• the same because chromosomes are copied prior to meiosis.

• different due to independent assortment during meiosis.

• different due to DNA replication prior to mitosis.

Tags

NGSS.HS-LS3-2

Which statement best describes the significance of this process?

• The process allows organisms to grow and heal.

• The process creates genetic variation in the resulting cell.

• The process produces clones of the parent organisms.

• The process copies DNA before cell division.

Tags

NGSS.HS-LS1-4

Which of these is most likely the result of the process shown in the diagram?

• Chromosome replication will cease to avoid errors that result in mutations.

• Offspring will no longer express traits from previous generations.

• Gametes will contain new allele combinations.

• Chromatids will have less genetic variety.

Tags

NGSS.HS-LS3-2

Which process occurs between Step 2 and Step 3 and creates more genetic diversity in the resulting cells?

• Chromosome nondisjunction

• Genome replication

• Crossing over

• Chromosomal deletion

Which table shows the expected phenotypes of offspring resulting from a cross between a

black angelfish and a black-lace angelfish?

• 
• 
• 
• 

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What would be the appearance of the offspring for the genetic combination labeled X?

• Tall, round

• Short, wrinkled

• Short, round

• Tall, wrinkled

Tags

NGSS.HS-LS3-1

A red flowered plant (RR) is crossed with a white flowered plant (WW) and produces plants with pink flowers (RW). If two pink flowered plants are crossed, what color offspring could be produced?

• red, white, and pink

• red and white

• pink and red

• pink and white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Meiosis produces __ daughter cells with ___ the genetic information of the parent cell.

• 4; half

• 4; equal

• 2; half

• 2, equal

Tags

NGSS.HS-LS3-2

In Andalusian fowls, black individuals (BB) and white individuals (bb) are homozygous. A homozygous black bird is crossed with a homozygous white bird. The offspring have a Bb genotype and are all bluish-gray. What type of nonMendelian genetics is represented by this cross?

• incomplete dominance

• codominance

• multiple alleles

• polygenic inheritence

In some chickens that show codominant inheritence, the gene for feather color is controlled by codominance. The allele for black is B and the allele for white is W. The heterozygous phenotype is known as erminette (black and white spotted). a. What is the genotype for black chickens? __

b. What is the genotype for white chickens? __ c. What is the genotype for erminette chickens? __

• Black: BB

  White: WW

  Erminette: BW

• Black: BB or Bb

  White: WW

  Erminette BW

• Black: BB

  White: bb

  Erminette: Bb

• Black: BB

  White: bb

  Erminette: BW

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2