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ycow [4]
3 years ago
8

1)A,d,c,B 2)B,a,d,c 3)C,d,a,b 4)C,a,d,b

Biology
2 answers:
Vilka [71]3 years ago
5 0
B,a,d,c is the correct answer for the question
Tatiana [17]3 years ago
4 0
B i took this test before and got it right
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Round seeds (R) are dominant to wrinkled seeds (r), and yellow seeds (Y) are dominant to green seeds (y). A plant of unknown gen
hammer [34]

Answer:

<h2>RrYy and rryy </h2>

Explanation:

1. As given; Round seeds (R)  are dominant on wrinkled seeds (r),

Yellow seeds (Y) are dominant on green seeds (g).

In a testcross, between an unknown genotype and a homozygous recessive with wrinkled and green seeds (rryy).

offspring are:  

Round and yellow are  53; genotype (R_Y_)

round and green are  49;  genotype (R_yy)  

wrinkle and yellow are 44;  genotype (rrY_)

wrinkled and green are  51 ; genotype  (rryy)

Here, the genotype of parents of these offspring would be RrYy and rryy.

6 0
3 years ago
Match the following.
valkas [14]

Answer:

1 . The stage on the first meiotic division when the homologous chromosomes move to opposite poles but the sister chromatids remain together

: b. Anaphase I

2 . The stage in the second meiotic division where sister chromatids migrate to opposite poles

: c. Anaphase II

3 . A structure on the chromosome that holds a pair of chromatids together during replication

: f. centromere

4 . A double-stranded chromosome following replication attached by a centromere

: d. chromatid

5 . A condition where non-sister chromatid of homologous chromosomes exchange genes

: e. crossing over

6 . The stage in the first meiotic division where the homologous chromosomes line up as a pair

: a. Metaphase I

7 . The stage in the second meiotic division where the chromatid pair lines up at the equator of the cell: g. Metaphase II

Explanation:

DNA replication occurs during the S phase of the interphase of the cell cycle. The replicated DNA molecules are accommodated in two sister chromatids of a chromosome that are held together by a centromere.  

During prophase I, the chromatids of a homologous chromosome pair exchange a genetic segment. This process is called crossing over. It generates recombinant chromatids with new combinations of genes.

Metaphase I of meiosis I includes the alignment of homologous pairs of chromosomes at the cell's equator. This is followed by separation and movement of homologous chromosomes to the opposite poles of the cell during anaphase I.  

Metaphase II of meiosis II includes the alignment of individual chromosomes, each with two sister chromatids, on the cell's equator. During anaphase II, splitting centromere separates the sister chromatids which then move to the opposite poles of the cell.

3 0
4 years ago
Sharp leaves on the savanna trees protect them from _____.
Ghella [55]
Protects the plant from losing water. The sharp needles of the tree mean that is has less surface area for the sun to make contact. They may also have differently shaped stomata, in order to prevent water loss
7 0
3 years ago
Describe the relationship between science and technology, and give an example of how they are related.
tankabanditka [31]
Science locates necessary info about how the universe works.  Engineering invents practical devices and systems using the knowledge learned by science. Technology is the collection of <span>products of engineering that can be used to solve problems and perform useful </span><span>tasks.</span>
5 0
3 years ago
Determine the complementary DNA bases for the following sequence: ATG TTG CTG
Leona [35]
TAC AAC GAC are the complementary nucleus acid bases
6 0
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