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3 years ago

If a somatic cell has 20 chromosomes , how many chromosomes will a gamete have ?

Biology

1 answer:

babymother [125]3 years ago

6 0

Answer:

Explanation:

The ratio between the somatic cells and gametes is 2:1. Therefore, since the somatic cell has 20, the gamete would have half: 10.

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In clover plants, the pattern on the leaves is determined by a single gene with multiple alleles that are related in a dominance

igomit [66]

Answer:

The correct answer is -

a. 7

b. 7 (p1p1, p1p2, p1p3, p1p4, p1p5, etc

c. p7 is abundant

Explanation:

According the question the dominance of the big leaves is p7 > p6 >p5 >p4 >p3 >p2 >p1 where 1 represent least dominance and 7 represent most dominance

let represent the phenotype with the numbers 1 to 7 and genotype with a combination of these numbers so the genotype in respect of phenotype would be :

p7p7,p7p6, p7p5, p7p4, p7p3, p7p2, p7p1 - most dominant 7

p6p6, p6p5, p6p4, p6p3, p6p2, p6p1 - 6

p5p5, p5p4, p5p3, p5p2, p5p1 - 5

p4p4, p4p3, p4p2, p4p1 - 4

p3p3, p3p2, p3p1 - 3

p2p2, p2p1 - 2

p1p1- 1 least dominant

Thus, there are 28 different combinations or patterns of genotypes. 7 phenotypes patterns.

6 0

3 years ago

Kinetic energy is a function of

777dan777 [17]

A. the kelvin temperature scale

5 0

2 years ago

Genetic drift _____.

Sergeeva-Olga [200]

Genetic drift happens when well-adapted organisms survive and reproduce more often than poorly-adapted organisms. <span>The statement that best sums up evolution is the change in a population through genetic variation over time. Natural selection may be through (1) differential reproduction, that is, not all organisms are able to reproduce to their fullest capacity because nature cannot simply sustain it and (2) acquire genes, that is heredity.</span>

5 0

2 years ago

If a small droplet of ordinary fat molecules is suspended in water, the fat molecules form a "ball of spaghetti" with no particu

kolbaska11 [484]

Answer:

Option 1, a charged end and a noncharged end

Explanation:

Complete question

If a small droplet of ordinary fat is suspended in water, the fat molecules form a "ball of spaghetti" with no particular orientation. But if a droplet of phospholipid molecules is put in water, all the molecules point outward, toward the water. Phospholipids are forced into this orientation because phospholipids have _____

a charged end and a noncharged end
three fatty acid molecules, all pointing in different directions
two fatty acid molecules pointing in different directions
both a saturated fatty acid and an unsaturated fatty acid
two charged ends

Solution

The structure of phospholipids consists of the following groups and molecules –

a) A glycerol molecule

b) Fatty acids (2 in numbers) – It is hydrophobic as it is uncharged and non polar in nature

c) Phosphate group (with alcohol) – It is hydrophilic as it is negatively charged and polar in nature.

When the phospholipids are placed in water, the molecule rearranges itself in a way that the hydrophobic head face inside and the hydrophilic head face outside thereby forming micelles.

Hence, option 1 is correct

3 0

3 years ago

The hypothesis that all species are descended from common ancestors was proposed by

MrRissso [65]

The answer is Charles Darwin. He was the first to theorize evolution from a common ancestor.

6 0

2 years ago