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Makovka662 [10]
3 years ago
13

in humans, clear gender differentiation occurs, not at fertilization, but after the second month of gestation. What is the first

event of this differentiation?
Biology
1 answer:
fredd [130]3 years ago
5 0

Answer:

is the B

Explanation:

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Plzzz help with the one with the membrane picture
3241004551 [841]

Answer:

1.) The solute molecules will not move between the two sides because the membrane does not have large enough spaces for the molecules to move through. The water molecules will move to the right side because water moves to places of a higher solute concentration.

2.) The right side represents high concentration because it contains the majority of the solute molecules.

3.) The left side represents low concentration because it contains a small amount of solute molecules compared to the right side.

7 0
2 years ago
While wading in the ocean, you look down into the water and notice an umbrella-shaped, translucent animal. It swims by pulsing i
PolarNik [594]

Answer:

cnidaria

Explanation:

the group contains jellyfish which fit that exact description tentacles that sting you with a burning sensation if your skin comes in contact with them

6 0
3 years ago
Color in McIver beetles is determined by two alleles at one gene locus. McIver beetles must have a heterzygous genotype (genotyp
seraphim [82]

Answer: The frequency of brown beetles is 0.32.

Explanation: The frequency of A1 allele is 0.8. As p+q=1, or the sum of dominant and recessive frequencies equals 1 or 100%:

1 - 0.8 = 0.2

In Hardy-Weinberg principle,

p^{2} + 2pq + q^{2} = 1

2pq represents the frequency of heterozygote individuals, so:

genotype A1A2 = 2*0.8*0.2 = 0.32.

Thus, the frequency of brown beetles (A1A2) in the population is 0.32.

3 0
3 years ago
Achondroplastic dwarfism is a dominant genetic trait that causes severe malformation of the skeleton. Homozygotes for this condi
AleksandrR [38]

Answer:

Jane: Aa

Matthew: aa

Explanation:

Jane is a heterozygous woman, which means that she is dominant for this genetic trait while Matthew is homozygous that did not inherit the achondroplastic dwarfism trait from his parents, that is why he is alive.

If we draw a Punnett square, we can see that some of their children will inherit the trait while others will not.

<u>   ║ a      ║ a</u>

<u>A  ║   Aa ║Aa</u>

a  ║ aa    ║ aa

5 0
3 years ago
The most abundant formed elements of the blood are:.
sukhopar [10]
Answer:
Red blood cells (RBC)
7 0
2 years ago
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