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lions [1.4K]
2 years ago
15

as compared with the production of egg cells, sperm cell production A) involves a jellylike outer covering b) occurs at a slower

rate c) begings earlier in life d)begins later in life
Biology
1 answer:
Bingel [31]2 years ago
4 0

The correct answer is:  d) begins later in life

Eggs or female reproductive cells are formed well before birth in a huge number (primordial oocytes). But, the number of oocyte decreases after birth constantly (there are 2 million oocytes at birth and 40,000 of them in puberty). At menopause, no egg cells are left.

On the other hand, the first sperms are formed only from puberty, but the production of those cells never stops.

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EleoNora [17]

Answer AND Explanation:

When the hemoglobin is folded, there is less surface area for transportation and binding of oxygen. The oxygen binds poorly leading to anaemia. The oxygen is transported by haemoglobin in form of oxyhaemoglobin to the tissues.

5 0
3 years ago
Hitchhiker's thumb (H) is dominant to no hitchhiker's thumb (h). A woman who does not have hitchhiker's thumb marries a man who
kakasveta [241]

Answer:

Genotypic ratio of offsprings will be: 1 (Hh) : 1 (hh)

Explanation:

This question involves a single gene coding for the possession or not of Hitchhiker's thumb in humans. The allele that codes for Hitchhiker's thumb (H) is dominant over the allele for no hitchhiker's thumb (h).

Based on this question, if woman who does not have hitchhiker's thumb (hh) marries a man who is heterozygous for hitchhiker's thumb (Hh) i.e. hh × Hh, the following gametes will be produced by each parent:

hh - h and h

Hh - H and h

Using these gametes in a punnet square (see attached image), the offsprings with the following genotypic ratio will be likely produced:

1 (Hh) : 1 (hh)

N.B:

- Two (2) of them were Hh i.e. with Hitchhiker's thumb

- The other two were hh i.e. no hitchhiker's thumb.

5 0
2 years ago
The cell membrane has many proteins embedded in it. These proteins have many different functions ranging from transport of mater
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3 years ago
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dem82 [27]

Answer:

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3 years ago
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