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4 Apr 2018

In a few sentences, describe how the process of terminal fusion works to produce diploid offspring from the meiotic products of the mother only

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Related questions

In the wild, closely related species will occasionally mate, and produce a viable offspring. This offspring is called a hybrid. A diploid male lion with 44 chromosomes mates with a diploid female tiger with 50 chromosomes and this mating produces a viable liger.

a. How many chromosomes would you expect to see in the body cells of this organism?

b. Would the organism be able to form viable gametes through the process of meiosis?
Explain your answer by thinking carefully about the steps of meiotic cell division.

Match the terms to the definitions provided.

Question 1 options:

gamete

somatic cells

zygote

sexual reproduction
1.

Reproductive life cycle that involves an alternation between haploid and diploid cells
2.

A single cell with a diploid number of chromosomes resulting from the fusion of an egg and a sperm.
3.

Cells (egg or sperm) resulting from a meiotic division of germ-line cells
4.

The non-reproductive cells found in embryos and mature individuals

Question 2 (5 points)

Match the terms to the definitions provided.

Question 2 options:

syngamy

haploid

meiosis

diploid

germ-line cells
1.

The cells that will eventually undergo meiosis to produce gametes.
2.

The number of chromosomes found in gametes (eggs or sperm).
3.

The process by which two haploid gametes fuse to form a new diploid cell.
4.

A specialized reduction division that produces cells with half the normal number of chromosomes.
5.

Two sets of chromosomes present in the somatic cells of adult individuals.

How is imprinting likely to affect the expression of recessive genetic disorder in the children of an affected mother if her mother also expressed the trait? (5MARKS)

The Calpyge mutation is in a gene that is imprinted. Describe how imprinting ensures that this mutation is only expressed in offspring if the mutant allele came from their father. (5 marks)

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