Chapter 9 Review

What is incomplete dominance?

• When one allele is completely dominant over another.

• A relationship where the F1 offspring will have a phenotype in between that of the parents.

• When both alleles for a gene are expressed in a heterozygous offspring.

• When two alleles, in a pair, are different.

What is a genotype?

• An organism's appearance.

• The likelihood that a specific event will occur.

• An organism's genetic makeup.

• A cross is which only one characteristic is tracked.

Tags

NGSS.HS-LS1-1

What is a dihybrid cross?

• A cross in which two characteristics are tracked.

• A cross in which only one characteristic is tracked.

• A diagram that biologists use to aid them in predicting the probable distribution of inherited traits in the offspring.

• An individual of unknown genotype is crossed with a homozygous recessive individual.

What is genetics?

• Occurs between flowers of two plants.

• An allele that is masked when a dominant allele is present.

• The transmission of characteristics from parents of offspring.

• The field of biology devoted to understanding how characteristics are transmitted from parents to offspring.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is heredity?

• The transmission of characteristics from parents of offspring.

• Describes a trait that covers over, or dominates, another form of that trait.

• A genetically determined variant of characteristic.

• The field of biology devoted to understanding how characteristics are transmitted from parents to offspring.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is self-pollination?

• Occurs between flowers of two plants.

• Occurs when pollen is transferred from the anthers of a flower to the stigma of either that flower or another flower on the same plant.

• Occurs when pollen grains produced in the male reproductive parts of a flower are transferred to the female reproductive part of a flower.

• The transmission of characteristics from parents to offspring.

What is an allele?

• An alternative form of a gene.

• A gamete.

• A genetically determined variant of a characteristic.

• An organism's appearance.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The dominant trait for rabbit's fur is black. If two heterozygous rabbit's were crossed, what percentage of the offspring would have black fur?

• 0%

• 50%

• 75%

• 100%

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NGSS.HS-LS3-1

A dihybrid cross of two heterozygous individuals for both traits of interest is likely to result in how many different genotypes and phenotypes?

• 9 genotypes; 4 phenotypes

• 10 genotypes; 5 phenotypes

• 11 genotypes; 5 phenotypes

• 9 genotypes; 6 phenotypes

What is the P generation?

• also pure breeding; offspring always produces the same trait every time

• the second generation of offspring obtained as the F1 generation self-pollinated

• the first generation of offspring obtained from an experimental cross of two organisms of the P generation

• true-breeding parents named by Mendel