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kow [346]
3 years ago
14

A _____ is a section of a chromosome that codes for a trait. The specific combination of alleles an organism has is called its _

_____ which affect(s) the organism's______?
Biology
1 answer:
ANTONII [103]3 years ago
3 0

Answer:

Allele. An allele is a viable DNA (deoxyribonucleic acid) coding that occupies a given locus (position) on a chromosome. ... An organism in which the two copies of the gene are identical — that is, have the same allele — is called homozygous for that gene.

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Why are coastal areas cooler during the day than inland areas?
kenny6666 [7]
The answer is <span>B. A cool breeze blows from the sea during the day.</span>
6 0
3 years ago
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Juan's family has a history of sickle cell disease. His father died of sickle cell disease complications when Juan was six years
Alex17521 [72]

Answer:

Juan father has the sickle cell trait. Gina's maternal grandmother shows the trait and Gina's mother would have inherited it, since she is heterozygous. Gina's paternal grand father shows the trait and Gina's father inherited it as he is also heterozygous.

The chances of Gina to inherit the trait is 25%

(1/2 from both parents)

1/2 + 1/2 = 1/4 equivalent to 25%

Since Gina do not show the trait. A 50% probability for Gina to have it cannot be ruled out since she's not homozygous and there is a 25% probability of being free from the trait.

Take, both Gina and juan to be carriers

HbA HbS x HbAHbS

(Shown in image 1)

We could see a 25% of probability of the trait, 50% chances and 25% of lacking the trait.

Assume Gina is free from the trait and Juan is a the carrier,

HbA HbS x HbAHbA

(Shown in image 2)

The resulting offspring would be at a 50% normal and 50% carriers and none are affected.

My advise for Juan and Gina is to be tested to affirm the likelihood of the trait being present or not as this will allow them plan for giving birth offspring rightly.

5 0
3 years ago
For a species with four pairs of chromosomes, ________ gametic combinations are possible
BabaBlast [244]
<span>For a species with four pairs of chromosomes, 16 gametic combinations are possible</span>
If a species has 4 pairs of chromosomes will mean that the species has 8 alleles. In mating, only one of the pair will be inherited. In this case, the probability of the combination will be 2^4 assuming all the genes is heterozygote. 
8 0
3 years ago
What motion causes a year
Eva8 [605]

Answer:

Revolution. As the earth rotates on its axis, it also revolves in orbit around the sun. It takes exactly 365 days for Earth to make one full trip around the sun -- our definition of a year.

Explanation:

<u>Revolution. As the earth rotates on its axis, it also revolves in orbit around the sun. It takes exactly 365 days for Earth to make one full trip around the sun -- our definition of a year.</u>

8 0
3 years ago
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Which statements describe the structure of each type of macromolecule? Check all that apply.
Volgvan
Statements A, B and D are correct.

Statement C is incorrect as hydrogen atoms are also present.
5 0
3 years ago
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