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brilliants [131]
3 years ago
10

When does the embryo form?

Biology
1 answer:
kobusy [5.1K]3 years ago
3 0

Answer:A

Explanation:

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A man is brachydactylous (very short fingers; rare autosomal dominant), and his wife is not. Both can taste the chemical phenylt
netineya [11]

Answer:

The correct answer is -

A) BbTt x bbTt

B) .5^4 or 1/16 or 0.0625

Explanation:

As it is given that Brachydactylus and PTC tasters both traits are autosomal dominant conditions which mean only one allele would be enough.

For Branchydactylus and For tasting :  man and women will be heterogeneous.

Hence,

The Genotype of man = BbTt

The Genotype of wife = bbTt

b. Answer = 0.0625

For Branchydactylus:

Bb X bb

Possible genotypes:

B b

b Bb( Brachydactylus) bb(normal)

b Bb (Brachydactylus) bb (normal)

The probability of a single child being Branchydactylus = 2/4 = 0.5

So,  Probability of all 4 child being Branchydactylus = .5 x .5 x .5 x .5 = 0.0625

3 0
2 years ago
You are given two true-breeding groups of rabbits. The first group has floppy ears and white coat color. The second group has st
malfutka [58]

Answer:

Option E, Floppy ears are dominant over straight ears; coat color is determined by incomplete dominance

Explanation:

Let the allele for floppy ears be "F" and the allele for straight ears be "f"

And Let the allele for black coat color be "B" and the color for white coat color be "b"

Now, the cross is carried out between the first group having floppy ears and white coat color (FFbb) and the second group having straight ears and black coat color (ff BB)

The 16 offspring have genotype FfBb

Phenotype of 16 offspring is Floppy ears and grey coat

Ff represents the floppy ear , thus "F" is dominant over "f"

Bb represents the grey color which is a case of incomplete dominance in which none of the real trait i.e black or white is expressed.

Hence, option E is correct

6 0
3 years ago
Name one way DNA can be transferred naturaly between species
Vitek1552 [10]
DNA can be transferred naturally between species by breeding.
6 0
3 years ago
Through which vascular tissue do water and nutrients get transported to reach the leaves during transpiration.
lisov135 [29]
The will answer is C - xylem
7 0
2 years ago
Repolarization occurs because Multiple Choice potassium ions continue to diffuse out of the cell after the inactivation gates of
alina1380 [7]

Answer: Repolarization occurs Potassium ions continue to diffuse out of the cell after the inactivation gates of the voltage-gated sodium ion channels begin to close.

3 0
2 years ago
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