Biology Midterm Review

The production of pink flowered plants from a cross between a red flowered plant and a white flowered plant is an example of

• multiple alleles

• complete dominance

• incomplete dominance

• codominant inhertiance

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NGSS.HS-LS3-1

All of the following are effects of crossing over of homologous chromosomes during prophase I of meiosis with the EXCEPTION of

• increased genetic variety.

• increased number of chromosomes in the offspring.

• the appearance of new phenotypes in the offspring.

• possible harmful mutations from cross-over errors.

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NGSS.HS-LS3-2

During the early stages of meiosis, two chromosomes in a homologous pair may exchange segments, producing genetic variation in sex cells. This process of exchange is called

• transcription

• crossing over

• nondisjunction

• genetic shuffling

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NGSS.HS-LS3-2

According to Mendel’s law of dominance, we would expect _________ percent of the offspring to have white flowers.

• 0

• 25

• 50

• 75

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NGSS.HS-LS3-1

NGSS.HS-LS3-3

Start with the P generation with the following genotypes (AA x aa). Based on classical Mendelian inheritance, how will a cross between two homozygous parents, one dominant and one recessive, influence future generations?

• The F₁ generation will show an even split between the dominant phenotype and the recessive phenotype.

• The F₁ generation will all show the dominant trait and future crosses will continue to produce genotypes expressing the dominant trait

• Although the F₁ generation will all show the dominant trait, the offspring will all be heterozygous and increase chances of future variation.

• The F1 generation will show a mix of the dominant phenotype and recessive phenotype and over generations the recessive trait will increase in number.

Tags

NGSS.HS-LS3-1

The diagrams are showing a cell undergoing a mitotic division at different points of Anaphase. Use the ABC labels on the drawings to indicate the sequential order.

• A-B then C

• B-C then A

• B-A then C

• A-C then B

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NGSS.HS-LS1-4

Why do some organisms reproduce asexually?

• To increase genetic diversity

• To rapidly produce like offspring

• To have a variety of offspring at the same time

• To get rid of genetic problems while reproducing

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NGSS.MS-LS3-2

Which statement is true for asexual reproduction?

• Genetic information from two parents is copied and passed on to form offspring with new genetic information.

• Genetic information from a single parent is copied and passed on to form offspring with new genetic information.

• Genetic information from two parents is copied and passed on to form offspring with identical genetic information.

• Genetic information from a single parent is copied and passed on to form offspring with the same genetic information.

Tags

NGSS.MS-LS3-2

You look out over a field of sunflowers. A farmer has grown the sunflowers to harvest and sell the seeds. Some of the sunflowers are tall; some short. Some of the flowers are bright yellow; others more multicolored. Some heads are full of seeds; some are not full. How were these sunflowers most likely produced?

• sexually using seeds

• asexually using seeds

• asexually using cuttings of the stem

• sexually using tissue culture in the lab

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NGSS.MS-LS1-4

NGSS.MS-LS3-2

Consider the genetic cross for absent-mindedness, which is a dominant trait. All of the offspring from this cross will be absent-minded. If two parents that are absent-minded have offspring that are not, what MUST be the genotypes of the parents?

• aa X aa

• Aa X Aa

• Aa X aa

• Aa X AA

Tags

NGSS.HS-LS3-1