All categories

3 years ago

In pea plants, the allele for tallness is dominant. What are the possible genotypes of a tall pea plant?

Biology

2 answers:

Alja [10]3 years ago

6 0

Answer:

The correct answer would be TT and Tt.

According to the law of dominance, the trait which gets expressed in the heterozygous condition is termed as dominant trait.

The allele of a gene which is expressed in heterozygous condition is symbolized by capital letter.

For example, the allele responsible for tallness of a plant can be symbolized by "T".

Thus, the genotype of a gene responsible for the tallness of a plant can either be TT (homozygous) or Tt (heterozygous).

kozerog [31]3 years ago

4 0

TT and Tt are possible genotypes of a tall pea plant as the resulting phenotype of both possible genotypes result in a tall pea plant.

You might be interested in

20) In order for high force cross bridges to form in contracting skeletal muscle, calcium must A) phosphorylate the troponin to

SashulF [63]

Answer:

E. bind to troponin which moves the tropomyosin

Explanation:

calcium ions bind to troponin, causing conformational changes in troponin that allow tropomyosin to move away from the myosin binding sites on actin. Once the tropomyosin is removed, a cross-bridge can form between actin and myosin, triggering contraction

3 0

3 years ago

[Chapter 3-4] A cross was carried out between the following two pureline parental strains:Parent 1: A/A; b/b; D/D; e/e; F/FParen

andrew-mc [135]

Answer:

Following the selfing of the F1 from the cross between the two parental strains, what proportion of the F2 individuals will phenotypically resemble either one of the two parental lines?

= 7.03% of F2 progeny will resemble parent 1

= 2.34% of F2 progeny will resemble parent 2.

Explanation:

Parent 1: AA; b/b; D/D; e/e; F/F

Parent 2: a/a; B/B; d/d; E/E; f/f

F1 Progeny: A/a; B/b; D/d; E/e; F/f

knowing that the F1 progeny is selfed, the possible gamete outcomes are:

ABDeF , ABDEf, ABdeF, ABdEf

AbDeF , AbDEf , AbdeF , AbdEf

aBDeF , aBDEf , aBdeF , aBdEf

abDeF , abDEf , abdeF , abdEf

All gametes are either eF or Ef (the two parental genotypes) and never EF or ef.

At the A, B and D loci, the F1 are heterozygotes. Therefore, in the F2 progeny, for each locus, 3/4 of the progeny will have the dominant trait while 1/4 will have the recessive phenotype. Further, 1/2 of all F2 progeny will have the haplotype eF and the other half will be Ef.

Proportion of progeny resembling Parent 1:

Parent 1 has the Phenoytpe AbDeF. As previously discussed, 3/4th of all F2 progeny has the phenotype A, 1/4th of F2 progeny has the phenotype b, 3/4th of F2 progeny has the phenotype D and 1/2 of F progeny has the phenotype eF.

Thus, the proportion of progeny resembling Parent 1

= 3/4 x 1/4 x 3/4 x 1/2 = 0.0703125

= 7.03% of F2 progeny will resemble parent 1.

Proportion of progeny resembling Parent 2:

Parent 2 has the Phenoytpe aBdEf. As previously discussed, 1/4th of all F2 progeny has the phenotype a, 3/4th of F2 progeny has the phenotype B, 1/4th of F2 progeny has the phenotype d and 1/2 of F progeny has the phenotype Ef.

Thus, Proportion of progeny resembling parent 2

= 1/4 x 3/4 x 1/4 x 1/2 = 0.0234375

= 2.34% of F2 progeny will resemble parent 2.

7 0

3 years ago

A pregnant woman will probably not be able to deliver her baby vaginally if the ____________ is not large enough to accommodate

valina [46]

The answer is pelvic outlet. It is because if this is not large enough and it is small, the baby won’t be able to be carried or delivered out from the woman’s vagina as it won’t fit the baby and will likely lead to complications if pushed through.

7 0

2 years ago

1. _______________________ is a process of gaining and testing knowledge & must be proven through experimentation. 2._______

maks197457 [2]

Answer:

Science
pseudoscience

Explanation:

Science is the study of nature and behavior of everything around us. It is the knowledge on the physical or material world obtained through observation and experimentation.

Pseudoscience incorporates convictions, speculations, or practices that have been or are viewed as logical, however have no premise in scientific fact. This could mean they were invalidated experimentally, can't be tried logically, or need proof to help them. The term commonly has a negative implication. At the point when utilized, somebody's intimating the theme did not depend on logical discoveries and is, in this manner, ailing in truth.

5 0

3 years ago

Which of the following identifies the function of glycolysis within the entire process of cellular respiration?

enyata [817]

Pretty sure its "Breaks down glucose into two pyruvate molecules"

I have no Idea what FAD is and that one doesnt sound correct
It doesnt send it to the etc as far as I know
and ADP to ATP doesnt happen in glycolysis as far as I know

Glycolysis is one of my least favorite parts of Bio so Im not entirely sure.

4 0

3 years ago

Read 2 more answers