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MArishka [77]
3 years ago
14

What is the expected phenotypic ratio of the offspring of a a BbPp*BbPp cross if these alleles sort independently?

Biology
1 answer:
nadezda [96]3 years ago
8 0

Answer:

Let's consider that the allele 'B' is for Black hair colour and it is dominant. Let's consider that the allele for red hair colour is b.

Let's consider the allele for lacking horns or polles is 'P' and it is dominant. The allele for having horns is 'p' and it is recessive.

When two heterozygous black, lacking horns (BbPp) are crossed, the results will have the probability of 9 black/polled : 3 black/horned : 3 red/polled : 1 red/horned organisms.

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In plants, which of the following are produced by meiosis?
prisoha [69]

Answer:

The correct answer is option c. Haploid spores.

Explanation:

In the plants, spores are normally unicellular and haploid and produced by the process of meiosis in the sporophytic body of the plant.

These haploid spores undergo the mitotic division and develop a new individual called gametophyte that forms gametes eventually.

Thus, the correct answer is option C. Haploid spores.

4 0
3 years ago
Witch step of cellular respiration will not take place in the absence of oxygen
Over [174]

The answer is; glycolysis

This process converts glucose molecule to pyruvate. It is an oxygen-independent pathway, unlike the Krebs cycle. Glycolysis occurs in the cell cytoplasm while the Krebs cycle (aerobic pathway) occurs in the mitochondria. In the presence of oxygen, the product of glycolysis, i.e pyruvate, is fed to the Krebs cycle.  If oxygen is unavailable the pyruvate is converted to lactate.


7 0
3 years ago
A cross between two squash plants that produce yellow squash results in 124 offspring: 93 produce yellow squash and 31 produce g
iVinArrow [24]

Answer:

<h2>Both Yy</h2>

Explanation:

1. As  given here,

Total offspring are= 124;

that produce yellow squash= 93;

that  produce green squash= 31;

2. Let Y  for yellow producing squash and y for green squash;

Y is dominant over y.

3. Cross between two yellow squash producing plants

Genotype of parents = Yy and Yy

offspring = YY, Yy, Yy and yy,

as Y is dominant over y, so YY and Yy all produce yellow squash, and yy  produce green squash.

4. Their phenotypic ratio is 3:1 , as in question 93: 31

4 0
3 years ago
Read 2 more answers
Polygenic inheritance is determined by multiple located at different loci on different chromosomes
egoroff_w [7]
Polygenic inheritance is determined by multiple Genes <span>located at different loci on different chromosomes.
Polygenic inheritance happens when an individual posses quantitative traits that become a variation compared to the parent's traits.
This phenomenon happens due to the combination of two or more genes that resulted in the characteristics that considered as the combination of both parents' characteristic.
</span>
8 0
3 years ago
Read 2 more answers
Name one source of human stem cells ,other than human embryos
11Alexandr11 [23.1K]
Hello There!

It is from adult bone marrow.

Hope This Helps You!
Good Luck :) 

- Hannah ❤
8 0
3 years ago
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