Frequent question: How many chromosomes would be in the egg cell of a female black bear?

How many chromosomes are in a bear cell?

The grizzly bear genome has a diploid karyotype of 37 chromosome pairs [12,13], and there is a mean distance of 688 bp between heterozygous positions in this assembly.

How many chromosomes are in the egg in terms of N?

The normal haploid number for a human egg or sperm is 23 chromosomes (n = 23). The term diploid refers to two sets of chromosomes resulting from the union of the sperm and the egg. This is typically the number of chromosomes found in the nuclei of body cells (somatic cells) of a plant or animal.

What is the black bear diploid number?

Number of Chromosomes Present at Different Stages of Cell Division

Diploid Number (2n)
Black Bear
Fruit Fly 8

Do black bears reproduce sexually or asexually?

Bears usually reach sexual maturity between the ages of 3 and 5. A female bear gives birth to one to four cubs every 2 to 4 years. Male and female bears live in their own territories and do not really come into contact with each other outside of the mating season.

What animal has 45 chromosomes?

List of organisms by chromosome count

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Organism (Scientific name) Chromosome number
Dolphin (Delphinidae) 44
Arabian coffee (Coffea arabica) 44
Reeves’s muntjac (Muntiacus reevesi) 46
Human (Homo sapiens) 46

What animals have 23 pairs of chromosomes?

Potatoes and Chimpanzees, for example, both have 24 pairs of chromosomes. Humans are not the only animal with 23 pairs, either–the Chinese subspecies of Muntiacusmuntjac, a small kind of deer, also has 23 pairs of chromosomes.

What do you mean by haploid n cell?

Haploid describes a cell that contains a single set of chromosomes. … The number of chromosomes in a single set is represented as n, which is also called the haploid number. In humans, n = 23. Gametes contain half the chromosomes contained in normal diploid cells of the body, which are also known as somatic cells.

What happens when you have 47 chromosomes?

Humans have 23 pairs of chromosomes. A trisomy is a chromosomal condition characterised by an additional chromosome. A person with a trisomy has 47 chromosomes instead of 46. Down syndrome, Edward syndrome and Patau syndrome are the most common forms of trisomy.

Which animal has highest number of chromosomes?

The mitotic and meiotic chromosomes of the semiaquatic rodent Ichthyomys pittieri (Rodentia, Cricetinae) from Venezuela were analyzed by means of conventional staining and several banding techniques. The diploid chromosome number of this rare species is 2n = 92, which is the highest value known for mammals.