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dolphi86 [110]
2 years ago
9

Can you please help me

Biology
1 answer:
alexira [117]2 years ago
6 0
The answer would be A
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Breeders can use a Punnett square, such as the one below, to predict the outcome of a genetic cross. If the genotype of both par
pickupchik [31]

Answer:

Half would have the genotype Aa.

Explanation:

Given that the genotype of both of the parents was "Aa"; both parents would make two types of gametes. The 50% gametes from each parent would carry allele "A" while the rest 50% gametes from each parent would carry allele "a".

The random fusion of gametes of two parents would give the progeny with genotype ratio 1/4 AA: 1/2 Aa: 1/4 aa.

3 0
3 years ago
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How long does a lunar eclipse last?<br><br> Months<br> Minutes<br> Days<br> Weeks
Sergio039 [100]
A lunar eclipse can last for a couple of hours and some minutes
8 0
3 years ago
The testcross makes it possible to determine the genotype of an individual of unknown genotype who exhibits the dominant version
klio [65]

Answer:

All of the above answer choices are correct.

Explanation:

Test cross is done to find out the genotype of an individual displaying dominant phenotype as it can be homozygous or heterozygous. To find this the individual is crossed with a recessive phenotype individual. For example: a dominant trait tall height can be homozygous TT or heterozygous Tt. If it is TT all the offspring of test cross with tt will be tall. If it is Tt half of the offspring will be tall and half of the offspring will be short.

Multiple offspring are required to come to the final result because offspring production happens in random order and it might take a few tries before another type of phenotype is produced. For example: If a test cross produces an individual with dominant phenotype we can still not surely say if the test individual is homozygous or heterozygous because both can produce dominant phenotype in test cross. We need more offspring to check if the recessive phenotype is produced or not and accordingly decide the genotype of test individual.

Hence all of the above answer choices are correct.

6 0
3 years ago
A stretch of DNA with instructions for one trait. *
astra-53 [7]
The answer is b, genes
6 0
2 years ago
Define the general difference between an autotroph and a heterotroph
Klio2033 [76]

Answer:

Explanation:

If we break down the word autotroph, auto means “self” and troph means "feeding" or nourishment. However, when we break the word heterotroph, we get hetero- meaning other, and troph meaning feeders.

This is the critical difference between these two groups. Autotrophs synthesize or make their own food whereas, heterotrophs cannot make their own food thus have to rely on others by eating or absorbing others. For example, plants are autotrophs because they can make their own food using photosynthesis, whereas, humans are heterotrophs because we have to eat others to survive.

8 0
2 years ago
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